Which concept refers to factors that hamper plant health, including drought and pests?

• A. Stress Factors
• B. Pore Space
• C. Producer
• D. Soluble Salts

Answer: (A)

Stress factors refer to conditions that hamper plant health and growth by causing physiological strain. Drought is a classic abiotic stress that limits water availability, leading to reduced turgor, stomatal closure, lower photosynthesis, and weaker turf vigor. Pests are biotic stressors that damage tissues, remove resources, and can create entry points for diseases, further weakening the plant. Together, these factors—whether they come from water stress, temperature extremes, salinity, or pest and disease pressure—describe the range of challenges that prevent a plant from thriving.

Other options don’t capture this broad idea. Pore space is about soil structure and aeration, which influence root health but don’t themselves define the range of factors that hamper plant health. A producer is an organism that makes energy, not a concept about plant stress. Soluble salts describe a specific issue related to soil salinity, not the general category of factors that hinder plant health.